Rotary stamping machine



March 26, 1940. SERAL ROTARY STAMPING MACHINE Filed Sept. 19, 1939 3 Sheets-Sheet 1 TTORNEY March 26, 1940.

Filed Sept. 19, 1939 3 Sheets-Sheet 2 INVENTOR KHCHI SERAI BY f www ATTORNEY M26, 1940. K. SERM 2,195,135

ROTARY STAMPING MACHINE Filed Sept. 19, I939 3 Sheets-Sheet 3 I INVENTOR 32 52 Knuu SIRAI BY '7 M TTORNEY.

, and more particularly to a rotary printing ,mech- .anism adapted.for use in a conveyer system for automatically stamping cartons, containers, or other articles advancing in spaced, relation veyer system, 7 mounted thereon, and showing an-article in one v position on the conveyer;

Patented Mar. 2 1940 PATENT o icE i I, I 2,195,135 ROTARY STAMPI NG MACHINE. Kiichi" Serai,,.Hnolulu, Territory of Hawaii, as-

si'gnor to Hawaiian Pineapple-Company, Limitecl, Honolulu, Territory of Hawaii, a corpora--.

. I tion-of'Haw'aii Application September 19, 1939, Serial No. 295.592

s Claims I (01. 101-35) along the system. The automatic feature of my invention is afforded by. reason, of the operation ,of the printing mechanism by successive articles as they are carried on the conveyer past the printing mechanism.

Further advantages of my invention are the positive driye'of the printing mechanism, the

accuracy of, the printing impression, both with regard to .uniformity andldistinctness, and the K .con'tinuousoperation with. a minimum of atten- ,tion.

Other objects of my invention will be referred to in thecourse of the, following more detailed description of my invention, which is illustrated in the accompanying drawings; in which,

Fig. 1 is a side elevation of a portionof a'conwith my printing" mechanism Fig. 2,is a cross sectional view taken along the line 2.- 2 of Fig. 1; r Fig. 3 is a; plan-view of Htheprinting mechanism and 3 adjacent ,conveyer frame partly .broken away, Showing diagrammatically an article in one position on the conveyer; and .Fig. 4. is a similar plan view'of the printing mechanism and adjacent conveyer frame, showingthe position of the, printing mechanism ele-.

mentsafter the'article has loeencarried by the conveyger, toa more advanced position.

My printing mechanism is adapted for \use with any conventional type 'oi conveyer, system,

that shown inlthe drawings being a part of the I co nveyer'systemffor"a carton sealing machine o'f'standard design? The conveyer system shown includes a frame Ill supporting a slide l2 along which the c'artons'Aare advanced between adjusta ble guide rails l4 bymeans of pusherbars lt' connected' to endless chains l8 operated along the sides of the slide by means of sprocket drive wheels 20: connectedto a motor or other "suitable source of power (not shown). I

In thefdrawings, my printing mechanism is shown mounted onthe frame of the conveyer system ina position suitablefor stamping a side of the articles passing through the conveyor. The printing mechanism includesa rotary element 3B,,whichis adapted to'be advanced towards and away from the path of-t'ravelof. the

' "aruc 1es,' sn to be rotated by frictional'engageinvention relates to printing mechanism,

I scribed first.

ment of an e'lement of the printing mechanism with an article A as the article passes the print-- ing station. The print holder, therefore, is mounted for a compound movement. v

The movement of the rotary element toward andaway fromthe path of travel will be de- For this purpose, the rotary element Siiisjournaled for rotation on a vertical axis in a yoke member'32,which in turn is mounted fol-pivotal movement in a horizontal plane. Such pivotal movement is permitted by pivotally mounting the yoke 32 by means of bearing sleeves34 and 34' on a vertically disposed pin 36 fixedly mounted in a boss 38'projecting from an auxiliary frame 40, securely fixed to the conveyor frame 12 lay-[two bolts secured in one of' the upper longitudinal guides l4. j

The pin 34 is provided with a coil spring 42 anchored at the upper end to the boss '38, and at the lower end secured to sleeve 34'. The

spring'42 is tensioned to. urge the "rotary element 30 continuously away from the conveyer path, and in a clockwise direction, as viewed in Figs. 3 and 4,

-As 'a stop for movement of yoke member 32 h under the influence of spring 42, I provide an 32 is a cam 54,mounted on rotaryelement 33,

coaxially thereof, below 'the lower arm ofyoke 32, as shown in Figs. 1 and 2. The contour'of cam-"54 is best shown in Figs; 3 and 4, and includes a cylindrical lobe throughout the greater portion of its periphery, with a deep cut intervening offset in a relatively smallp'ortion of its periphery. l

The normal inoperative neutral relative positions of yoke 32 and arm 44 are shown in Fig. 3, with the spring 50 holding arm 44 against stop '48, due to the fact that spring 50 is of greater. 50

strength than. the coil spring 42, and with the cam roller 52 seated in the offset of cam 54. In order'to'move the yoke 32 from the position shownin Fig. 3 towards the conveyer path of travel, andtothe position shown in Fig. 4, thereby carrying' the-print holder rotary element from arm 44 as cam roller 52 rises onto the lobe.

of cam 54.

Further rotary motion of the rotary element 30, including cam 54 and-abutment member 56, is caused by the resulting frictional engagement of a rubber drive ring 58, supported on element 30, with the side of the advancing article, such engagement being positively maintainedby the spring 50.

Type 59 may be mounted if desired in two lines, as shown, on the rotary element 30, and may be held in position against the periphery thereof, by any suitable means such as a circular coil spring 60. Thus, as the rotary element 3! is rotated by drive ring 58, the type contacts the side of the article at a predetermineddistance from its leading end, and at a fixed height, dependent upon the exact position of the type on the periphery of the type holder.

The rotary element is designed so that the external circumference of the rubber drive ring 58 slightly exceeds the length of the articles to be operated upon. Thus, as the rubber drive ring 58 reaches the rear end of the article, the abutment 56 has already passed back into the path of travel of articles on the conveyer slightly behind the article, and the roller 52 has reached the end of the lobe of [cam 54 due to the rotation of said cam with member 30. 'As the roller 52 reaches the end of the lobe of cam'fi i, the pressure of spring 42 forces it to'ride along the beveled side of the offset portion of the cam 54, permitting yoke 32 to return toits initial position adjacent arm 44 under the action of spring 42.

It will be obvious that the rotary element 30 may be replaced by type holders of slightly different circumference to accommodate the mechanism for operation on articles of difierent lengths.

However, so long as articles of identical length are advanced in spaced relation'along the conveyer, the mechanism above-described will operate to print firmly and distinctly any desired notation on each advancing article at identical positions, regardless of the distance between the advancing articles, and regardless of any variation in the distance between successive articles.

In order to insure that the type 59 will be supplied continuously with sufiicient ink or other printing material, I mount on, yoke 32a dispensing apparatus including a rotatable; cylindrical inking roller 10 mounted ,for rotation on a shaft 12. The inking roller 10 can be supplied with ink from a sight feed ink reservoir 14 in a manner well known to the art. Since the type projects somewhat from the periphery of the rotary element 30, theparts are designed so that the type will contact the inking roller 10 with each revolution of the rotary element 30, thereby reinking the type for the succeeding impression. Operation of this reinking mechanism is well known, and equivalent mechanism might well be supplied.

I claim: i

1. In a conveyer system having, a frame defining apath of travel and a conveyer for advancing articles in spaced relation along said path, a. rotary printing mechanism. pivotally mounted on said frame adjacent said path of travel, said mechanism including a rotary print 5 holder and a rotatable abutment member fixed to said print holder and adapted to protect into said path of travel, and cam means on said frame and said print. holder cooperating to pivot said print holder upon rotation of said member by said 1 articleinto an operative position frictionally engaging a side of an article advancing on said conveyerand to release said holder to permit return thereof to an inoperative position remote from said path of travel after said print holder has rotated through a predetermined are.

2. In a conveyer system havinga frame defining a path of travel and a conveyer for advancing articles in spaced relation along said path, a rotary printing mechanism pivotally 20 mounted on saidframe adjacent said path of travel, said mechanism including a rotary print holder and a rotatable abutment member fixed to said print holder and adapted to project into said pathof travel, cam means on said frame 25 and said print holder cooperating to pivot said print holder upon rotation of said member by said article into an operative position frictionally engaging a side of an article advancing on said conveyer and means for returning said holder to an inoperative position remote from said path of travel after said print holder, has rotated througha predetermined arc.

3. In a conveyer system having a framedefining a path of travel and a conveyer for ad- 35 member by said article, into an operative posi-- tion. frictionally engaging a side of an article advancing on said conveyer and to release said holder to permit return thereof to an inoperative position remote from said path of travel after said print holder has rotated through a predetermined arc. 4. In a conveyer system having a frame defining a path of travel and a conveyer for advancing articles along said path, a rotary printing mechanism pivotally mounted on said adjacent said path of travel, said mechanism including a rotary print holder and a rotatable abutment member fixed tosaid print holderand adapted to project into'said path of travel, an arm pivoted on saidframe, cam means on said arm and'said print holder. means for continuously urging said arm towards a predetermined point spaced fromsaid path of travel, means for maintaining said cam means in continuous cooperative engagement regardless of the position 55 of said arm, said cam means cooperating to pivot said print holder into an operative position frictionally engaging a side of an article advancing on saidconveyer upon rotation of said member by said article, and means for pivoting go prising a frame, a yoke pivoted on said frame frame for movement in a horizontal plane, a rotary element journaled in said yoke, said rotary element including a peripheral print holder, cam means and africtional engaging band, cooperating cam means mounted on said frame, means a pivoted operative position While said member rotates through a predetermined arc and being adapted to release said yoke to permit return thereof to an inoperative position while said member rotates through the remainder of its path of revolution.

6. A device of the character described comprising a frame, a yoke and an arm each pivoted on said frame for movement in a horizontal plane, cam 'means journaled on said yoke and said arm, means for maintaining said cam means in continuous cooperative engagement, a rotary element journaled in said yoke coaxially with said yoke cam means, said rotary element including a peripheral print holder and a frictional engaging band, and an abutment member fixed to said rotary element and projecting beyond the periphery thereof, said cam means being adapted to maintain said yoke in a pivoted operative position remote from said arm while said member passes through a predetermined arc adjacent said arm and being adapted to release said yoke to permit return thereof to an inoperative position adjacent said arm while said member rotates through the remainder of its path of revolution remote from said arm.

7. A device of the character described comprising a frame, a yoke and an arm each pivoted on said frame for movement in a horizontal plane, cam means journaled on said yoke and said arm, means for maintaining said cam means in continuous cooperative engagement, a rotary element ,journaled in said yoke coaxially with said yoke cam means, said rotary element including a peripheral print holder and a. frictional engaging band, an abutment member fixed to said rotary eiement and projecting beyond the periphery thereof, said cam means being adapted to maintain said yoke in a .piv-

. oted operative position remote from said arm while said member passes through a predetermined arc adjacentsaid arm and being adapted to release said yoke to permit return thereof to an inoperative position adjacent said arm while said member rotates through the remainder of 7 its path of revolution remote from said arm, a stop on said frame for said pivoted arm and means for continuously urging said pivoted arm towards said stop regardless of the position of said yoke relative to said arm.

8. A device of the character described comprising airame, a yoke and an arm each pivoted on said frame for movement in a horizontal being adapted to maintain said yoke in a pivoted operative position remote from said arm while said member passes through a predetermined are adjacent said arm and being adapted to release said yoke to permit return thereof to an inoperative position adjacent said arm While said member rotates through the remainder of its path of revolution remote from said arm, a stop on said frame for said pivoted arm, means for continuously urging said pivoted arm towards said stop regardless of the position of said yoke relative to said arm, and an inking roller journaled in said yoke and adapted for frictional peripheral engagement with print, carried by said rotary element. r I

' KIICHI SERAI. 

